Analysis of Content Popularity in Social Bookmarking Systems - Evolving Application Domains of Data Warehousing and Mining - page 247

Figure 4. Two possible popularity evolution patterns. Note the two different phases in the popularity
evolution for stories that are selected for the 'Popular' section of the site

Figure 5. Digg arrival time distributions of popular vs. non-popular stories

t+Δt] . Figure 6 presents the result of aggregating
the user activity over 539 users drawn randomly
from the set of users belonging to D 0 ‎9 . Inspection

of the outer diagram reveals that Digg users are
intensively active during the very first period after
subscription to the service (note the extremely high